Sc569-00 Ricoh -

SC569-00: Fusing Thermistor Edge Error (Center) – Ricoh

  • You are uncomfortable disassembling the fuser unit beyond basic removal.
  • The error reappears after cleaning and checking connectors.
  • You smell burning electronics (indicating PSU failure).
  • The printer is under a current service contract (unauthorized repair may void coverage).

SC569-00

The Ricoh error code specifically indicates a Fusing Pressure Release Motor Error . This occurs when the machine's control board fails to detect the home position signal from the fusing pressure release sensor during the pressure release operation. Error Overview

  • The finisher alignment fence motor (often a stepper or DC motor) rotates.
  • The home position sensor (usually a photo-interrupter or micro-switch) does not change state (e.g., remains blocked or unblocked) within a set timeout (typically 1–2 seconds).
  • Occurs at power-on, finisher initialization, after a jam clearance, or during a staple/sort job.
  • Fusing belt unit (e.g., D059 4103 / D059 4104 depending on model)
  • Center thermistor (e.g., D059 4139)
  • Pressure roller (D059 4116)
  • Check the harness connections between the fusing unit and the machine.
    • Scroll to Top